发明名称 |
Tensioning and connector systems for tethers |
摘要 |
A top connector for a tether of a subsea buoy is disclosed. The connector has a support, a lever member movable about a pivot axis, and a chain stop mechanism mounted on the lever member to be situated below the pivot axis in use. The lever member is pivotably connected to the support via a flex joint arranged to bear a tensile load exerted by a top chain of the tether when engaged with the chain stop mechanism. The flex joint improves bending fatigue life of the top chain. A frame extends upwardly from the support to carry a sheave for the top chain. A pivotably connected lever member extends downwardly from the support. The lever member is pivotable relative to the support and the frame, allowing a compact arrangement that avoids the frame, the top chain or the sheave clashing with the shell of the buoy. |
申请公布号 |
US9227700(B2) |
申请公布日期 |
2016.01.05 |
申请号 |
US201214360259 |
申请日期 |
2012.11.15 |
申请人 |
Subsea 7 Limited |
发明人 |
Pontaut David;Krugel Chris |
分类号 |
B63B21/00;B63B21/10;B63B21/04;B63B21/50;B63B21/18;B63B22/18 |
主分类号 |
B63B21/00 |
代理机构 |
Levy & Grandinetti |
代理人 |
Levy & Grandinetti |
主权项 |
1. A top connector for a tether of a tethered buoyant structure, the top connector comprising:
a support comprising an annular collar that surrounds and defines a seat for a resilient annular bush; a frame extending upwardly above the support when oriented for use, the frame carrying chain-management features for supporting a portion of a chain of the tether in use; and a lever member comprising a down tube extending below the support when oriented for use, the down tube being pivotably connected to the support via a flex joint; and the flex joint comprising the resilient annular bush connected to the down tube; wherein the down tube is pivotable relative to the support and the frame. |
地址 |
Sutton GB |